HD74LS279
Function Table
Inputs
S**
H
L
H
L
R
H
H
L
L
Output
Q
Q
0
H
L
H*
Notes: 1. H; high level, L; low level
2. Q
0
; The level of Q before the indidicated input conditions were established.
3. *; This output level is psodo stable; that is it may not persist when
S
and
R
inputs return to their inactive
(high) level.
4. **; For latches with double
S
inputs; H; both
S
inputs high, L; one or both
S
inputs low.
Block Diagram (1/4)
R
S
1
S
2
Q
Absolute Maximum Ratings
Item
Supply voltage
Input voltage
Power dissipation
Storage temperature
Symbol
V
CC
V
IN
P
T
Tstg
Ratings
7
7
400
–65 to +150
Unit
V
V
mW
°C
Note: Voltage value, unless otherwise noted, are with respect to network ground terminal.
Recommended Operating Conditions
Item
Supply voltage
Output current
Operating temperature
Symbol
V
CC
I
OH
I
OL
Topr
Min
4.75
—
—
–20
Typ
5.00
—
—
25
Max
5.25
–400
8
75
Unit
V
µA
mA
°C
Rev.4.00, May 10, 2006, page 2 of 4
RENESAS [ RENESAS TECHNOLOGY CORP ]
